In connection with the Cultural Revolution of the 1960s, Mao Tse-tung wrote that the working classes would from then on take over leadership in all activities. That is to say, the least fitted by natural mental development, experience, and acquired education would dictate what was to be taught in philosophical and similar reflections about life, man, and history, if indeed such subjects would not be dropped altogether as unpractical, hence useless. The Peking Institute of Philosophy, a leading one in China, stopped publishing its journal Philosophical Research in 1966.